$OpenBSD: patch-f_wrpng_c,v 1.1 2011/07/08 20:36:09 naddy Exp $

Fix build with png-1.5.

--- f_wrpng.c.pat.orig	Wed Mar 28 18:23:14 2007
+++ f_wrpng.c	Wed Jul  6 11:06:59 2011
@@ -20,6 +20,7 @@
 #include "w_msgpanel.h"
 #include "w_setup.h"
 #include <png.h>
+#include <zlib.h>
 
 /*
  * Write PNG file from rgb data
@@ -59,7 +60,7 @@ write_png(FILE *file, unsigned char *data, int type, u
     }
 
     /* set long jump recovery here */
-    if (setjmp(png_ptr->jmpbuf)) {
+    if (setjmp(png_jmpbuf(png_ptr))) {
 	/* if we get here there was a problem reading the file */
 	png_destroy_write_struct(&png_ptr, &info_ptr);
 	return False;
